Because maternity dressing can be a challenge, to say the least, kudos go to these women, whose styles evolved as their figures grew. At seven months, the actressLeelee Sobieski appeared theportrait of cool and collected in a cobalt blue Christian Dior dress. Well into her second trimester,the Russian designer Natasha Goldenberg played up her eclectic look with an embellished Marni skirt, Céline sneakers, and a Charlotte Olympia camera bag. At five months,the model Hannelore Knuts remainedtrue to her androgynous-chic aesthetic,sporting a vintage jumpsuit along with ashaved ’do. And at five months, Systemmagazine editor Elizabeth von Guttman forwent a tent dress and sensible shoes forLouis Vuitton straight off the runway.